Colors and magnitudes appropriate for H-rich white dwarfs are provided. Calculations are based on the model atmosphere code developed by Rene Rohrmann. They have been published in the paper:
Lyman alpha wing absorption in cool white dwarf stars, Rohrmann, R., Althaus, L. G., Kepler, S. O. 2011, MNRAS, 411, 781
Lyman alpha wing opacity induced by H-H collisions
Lyman alpha wing opacity induced by H-H2 collisions
Colors and magnitude